DMC antialiasing problem

Hi,

weird problem occur, as You can see in attachments. Where white wall is in a background, antialiasing of a chair is ok. Where is a floor, AA is really bad. Same at second chair at top. Now I have almost all the objects in a room (starting to be complex scene) and everything was fine until now with the chair and table, other objects in scene renders fine.
Higher max. subdivs at DMC image sampler doesnt help, same for Adaptive amount in DMC sampler or subdivs in material. Only thing that helps is Noise threshold in DMC sampler. When I lower it to 0,002, AA of the edges of a chair is ok, but rendering is much slower, because Noise threshold reduce noise in every aspect of the image, not only the AA, what I need. I try put very high number in max. subdivs in DMC image sampler (like 50 for computing fur or something) but didnt help either. I try almost everything, is there anything I can do to help only AA?

I have it, uncheck Use DMC sampler thresh. in DMC image sampler can do the trick.

Yep, looks like the colors are too similar and V-Ray doesn’t think it’s necessary to add more samples. Also, if you are using gamma correction on the image, make sure that V-Ray knows about this too (e.g. the gamma setting in the Color mapping section is set to the appropriate value).

Best regards,
Vlado

Oh, good tip Vlado, thanks. Iam using the srgb button in VFB, so its true, VRay doesnt know about this. Thanks.